Well hell guys. I went out and got me some newer jeep rims and 3 days ago did the paint job using rustoleum auto primer and some flat black enamel... did good prep with proper timing in between the paint does seem like its soft. they look good but im almost worried to mount them and have them fail me. may have to spend the money...

I use rustoleum self etching primer on aluminum. I love it. I have never had any problems with it. I used to buy dupont variprime by the gallon but I telly like how smooth the rattle cans go on. sometimeI top it with a surface primer if I really want a watersand finish. I do scuff the metal and clean with charcoal lighter fluid (naptha) before I primer. I use automotive paint (acrylic enamel) for the finish coat. I manufacture signs if anyone is curious but I have painted cars. Also heard you can bake rattle can paint in oven for a good finish. I want to try doing that on some wheels someday when my wife is not home.

I used rustoleum on my bumpers for my YJ. Did great . It takes longer to dry if its cold or really hot . Be patient.
Also if you use the clear-coat wait a few days before applying that to make sure its dry .
I used wax & grease remover (quick dry) to clean after I had them media blasted.
A lot of people who use spray paint think its a 5 min job. Wrong . It takes prep, light coats, and patience for the proper drying time .